Spectacle-frame.



P. A. PERSHN.

SPECTACLE YRAME.

APPLICATION FILED APR. 18,1913.

'l Q3 W Patented Jam .6, w1@

Rm C si 5 l A I v 14- 915. 5 INVENTOR BY am @o FCE.

FRANK A. FERSOHN, OF BALTEMORE, MARYLAND.

SPECTACLE-FRAME.

To all 'whom t may concern.'

.Be it known that 1, FRANK A. FnRsoHN, a citizen ofthe United States, residing at Baltimore, in the State of Maryland, have -invented certain new and useful improvements in Spectacle-Frames, of which the fol lowing is a specification.

This invention relates to improvements in the construction of Ispectacle frames.

- The improvements have special reference to spectacle frames for holding lenses that are capable of axial or tilting movement relative to the temples that sustain the spectacles in position before the eyes of the wearer.

The invention is illustrated in the accompanying drawing, in which, A

Figure 1 showsa pair of spectacles in which the lenses are of the rimless type. This is' a front viewthe temples being folded. Fig. 2 is a top or plan view of one lens and shows the joint that connects one temple. Fig. 3 is a side elevation of the same parts shown in Fig. 2, Fig. l is an inverted or bottom plan of the same parts shown in Fig. 2. Fig. 5 is a section view on a larger scale and shows the construction of the improved tension device adjacent the temple-joint which latter is not seen in this figure. Fig. 6 is a cross-section on the line 6 6 of Fig. 5, and shows the stop-device that limits the tilting of the lens. Fig. 7 shows the several. parts of the tension device separated from each other for the purpose of clear illustration. Fig. S is a side view of the sleeve and shows the stop notch.

Fig. 9 is a view of the tubular spindle andl shows the slit. y

The invention is applicable to spectacles that have rims for the lenses or to lenses of t-he rimless type; in the present instance the lenses shown are rimless It may also' be stated that either `single lenses or bifocal lenses may be employed with the improved spectacle frames.

The numeral, 1, designates 4the lenses; 2,

' a bridge of any suitable kind connecting the `a sleeve,`8r=- The improved parts that comprise the present invention, are interposed Specification of Letters Patent.

Application tiled April 18, 1913.

Patented J an. 6, 1914.

Serial No. MLM?.

between the clip, 3, that attaches to the lens and the joint, 6, that connects with the temple. These improved parts consist of a tubular spindle, 7, attached to the lens-clip, 3, and a sleeve, 8, attached to one part of the temple-joint, 6. T he tubular spindle, 7, has a slit, 9, extending from its open end longitudinally; this slit, in the thin metal of which this device will be made, permits the tubular structurein its cross-section to have a certain degree of expansion and contraction for the purpose oftension to be presently explained. The sleeve, 8, is slightly tapered Ithe larger end being that to which one part of the temple-joint, 6, is attached. This sleeve, 8, has position around the tubular spindle, 7, the smaller end of the sleeve is nearest the lens-clip, and the spindle is loose or free to partly turn in the sleeve and permit the lens to tilt. As already stated the temple, 5, is jointed at,l 6, to the sleeve, 8, and as both temples and bothends of the spectacles are alike, it follows that when the spectacles have been placed in position, the two lenses may be tilted on an axial line through their longitudinal centers, from a vertical position to an inclined position, which latter position is shown in Fig. 3 by broken lines; this inclined position ofthe lenses facilitates the eye to see near work, or to read from a book.

In order to prevent the lenses from tilting too freely an improved'tension device is provided, and is shown in Figs. 5, 7 and 9, of the drawing. The tension device consists of 4the slit, 9, in the. tubular spindle, 7; the

sleeve fitting freely around said spindle, and a screw, 10, having a head, 11, which is provided on its under side with a bevel, 12. When the threaded part of the screw is inserted into the internally-screw-threaded split tube, 7, the beveled under side, 12, of the screw-head will act on the open end of sai-d split tube and thereby expand the tube within the said sleeve, 8, and increase the friction thereof; this increased friction is the tension referred to. I

An improved stop device is provided to limi-t the extent to which the lenses may tilt on their longitudinal axis. This consists of a lug, 13, projecting radially at the base of the tubular spindle, 7, and a notch, v14, at the smaller end of the sleeve` 8, 'which notch straddles said lug, 13. The relation of the parts of this stop device will be understood no by an inspection of Figs. 5 to 9. This device permits zi prevents it from completely turning.

Having thus described my invention what I claim and desire to secure by Letters Patent is l. Spectacle frames having in combination a, temple; @tapered sleeve attached to the temple by a joint; a le'ns supported at one end` by a nose-bridge and' at the other end by a tubular spindle said tube having a slit ext-ending longitudinally from its open end and the tubular spindle fitting Within said sleevethe smaller end of the sleeve being nearest the lens; and means inserted into said slitted tubular spindle to expand it Within the sleeve.

2. Spectacle frames having in combination a temple; a sleeve jointed to the temple and having a notch; a lens supported at its outer end by a tubular spindle fitting Within said sleeve and capable of partly turning limited tilting of the lens7 and therein said spindle being provided with a radially-projecting lug that engages said notch on the sleeve Eind serving as listop to limit the turning of the spindle, and means inserted into the tubular spindle to coniine the sleeve thereon.

3 Spectacle frames having in combination a temple; a sleeve jointed to the temple; Y

a lens supported at its outer end by :i tubular spindle internally screw-threaded and the spindle tting Within said sleeve loose or free to permit partly turning in order to tilt the lens; and a screw inserted into the said tubular spindle and confining the sleeve thereon.

In testimony whereof I aiiix my signature in presence of tWo Witnesses.

FRANK A. PERSOHN..

lVitnesses CHAs. B. MANN, G. FRED. Voer. 

